Istanbul is a major city in Turkey that straddles Europe and Asia across the Bosporus Strait. It is known for its rich history, having served as the capital of several empires, including the Roman, Byzantine, and Ottoman empires. The city is famous for its stunning architecture, such as the Hagia Sophia and the Blue Mosque. With a population of over 15 million people, Istanbul is one of the largest cities in the world. It is a vibrant cultural hub, offering a mix of traditional and modern influences. The city's bustling markets, like the Grand Bazaar, and its diverse cuisine attract millions of tourists each year.